Saudi Arabia is Asia's leader in petroleum production and petroleum reserves
Peru has the largest silver production of any country.
Mexico is the world leader in silver production
China and india
Brazil
Ivory Coast
Norman J. Hyne has written: 'Geology for petroleum exploration, drilling, and production' -- subject(s): Petroleum, Prospecting, Petroleum engineering, Geology 'Dictionary of petroleum exploration, drilling & production' -- subject(s): Dictionaries, Petroleum, Petroleum engineering 'Nontechnical guide to petroleum geology, exploration, drilling, and production' -- subject(s): Prospecting, Petroleum, Petroleum engineering, Geology
To minimize cost of petroleum production
petroleum can be found in any country.
Countries that are major producers of petroleum include the United States, Saudi Arabia, Russia, and Canada. These countries have large reserves and significant production capabilities.
Petroleum Reservoir
Petroleum glut means the production of petroleum is greater than the demand. When petroleum price drops due to over-production, the market cites it as an oil glut. Ref: http://en.wikipedia.org/wiki/1980s_oil_glut